Air-cooling device.



No. 665,392. Patented 1an'. 1, 190|;

s. B. WATERS.Y AIR CDULINS DEVICE,

(Apumion mea sape. 11, 1900.

(No Model.)

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JMW 6i 7m@ u. c. w: mums Peral-1s cu. rwofoumo.. wAsf-lmamn NITED STATES AIR-COOLING DEVICE.

SPECIFICATION forming part of Letters Patent No. 665,392, dated January 1, 1901.

Application filed September l1, 1900- Serial No. 29,714. @lo model.)

To all whom it nea/y concern:

Be it known that I', SILAS B. WATERS, a citizen of the United States, and a resident of Oincinnati, in the State of Ohio, have invented a certain new and useful Improved Air-Cooling Device, of which the following is a specification.

My invention relates to the cooling and moistening of air for Ventilating factories and the like; and it consists, primarily, in the construction of a certain chamber with porous walls to be kept moist and the'arrangement of an air-pump therein, so that large quantities of air are circulated in contact with water without necessitating great speed of passage or great pressure on the air-currents supplying the pump.

It also consists in certain details of construction hereinafter set forth.

In the accompanying drawings, Figure I is a plan view of the chamber containing the pump, partly in section, along the line fy y of Fig. II. Fig. II is a vertical section through the chamber along the line fr .fr in Fig. I, showing the pump in side elevation. side view of a fragment of the porous wall and of the water-trough for wetting the same.

In the figures, A represents a large chamber or a room, in which is placed the fanblower P, which forces air through the pipe B to ventilate a building. The walls of the chamber A are made by setting on end a double row of scantling a, which support the netting f, of any desired material, as the common galvanized-wire fence-netting. The space between these walls of netting is filled in with coke or charcoal or limestone g, packed loosely, so that air may pass freely through the wall. This is usually about eighteen inches thick. The top is sealed with a roof r, and a door is provided at h for entry to attend to the pump, &c.

Running all around the top of the wall g there is an overfiow-trough e, which has its outer edge depressed, so that water flows evenly over the same and falls on the coke filling. The trough is kept full by a feedpipe d. At the bottom of the wall a drain is constructed, as seen in Fig. II, to lead off the water after it percolates down through the coke filling. The sheet of water from trough e preferably falls at a point near the outside ,of the coke filling, as the tendency of the flow Fig. III is a ATENT FFICE.

of water is of course inward as well as downward.

The pump P may be set close to one wall of the room, and the shaft c of the same, extending through the wall, is driven by a pulley C. The trough e iits close against the edge of the roofing r, and there is no ingress 6o of air except through the wetted coke wall.

If initial expense may be disregarded, it is better to make the wall-filling with charcoal, it is better for filtering out noxious gases in the air and is also lighter; but my prime object is not filtering but cooling the air, and for thi-s purpose it is necessary, first, that the chamber A should be quite large, so that a sufiicient supply of air may be obtained to satisfy the capacity of the pump without add- 7o ing to its work appreciably by high pressure in the passage of air through the wall, as will be the case where said passage is rapid, and, secondly, the chamber must inclose the pump on all sides, so that air-currents may come from all directions to the pump, thus avoid-f4 ing the passage of the whole airsupply through one small area of wall and thereby heating the water flowing through the coke lling. It will be found that to attain the in- 8o tended function of cooling the air without unduly wetting it the passage through the wall must be slow, so that the air is cooled rather by contact with the cold water than by evaporation.

If the air be drawn simply through a closed chamber connected by a pipe to the pumpopening, it will be found that however large the said chamber a single direct current will be set up which passes all through one spot, co for the reason that to come from a greater distance it must increase its speed appreciably.

I am aware that this kind of device is not new; but it is essential to the attaining of 95 my object that the chamber A be quite large and that the porous wall g should surround the pump itself.

Having thus described my invention, I desire to secure by Letters Patent the following, roo and I claim- 1. An air-cooling device for Ventilating systems comprising an air-pump, a chamber inclosing said pump and having walls of porous dfl . of Wire-netting filled in between with coke or materia'h'anoverflow-trough'arrangedaround the top of said wall, 'and a supply of Waiter whereby the porous Wall is kept Wet and the supply of air for the pump flows therethrough in contact With the Water.

2. In an air-cooling device the combinat'ioni With a suction-pulnp of' a chamber inclosing the Same the walls whereof 'are composed of double Sheets of Wire-netting filled in between with coke, and a su pply of water flowing through the said coke filling, so that air rpassing therethroughto the'sa'id pump 'is cooled1 by contact with the Water.

3. A chamber for supplying cool air to a suction-pump, completely inclosing Vthe saine and having walls composed of double sheets charcoal and having a pipe Supplying a flow of Water therethrough to keep the said filling wet, the said walls being of great thickness and large area so that by its slow passage therethrough the air is cooled by contact rather than by evaporation, as described.

4. The combination in an air-coolin g device of *the suction-'pump P, y'the inlet-chamber A having thick 'porous walls g, The same 'being of very large area relative to the pump-opening and composed of double sheets of netting filled in between with coke or charcoal, and

fa tightfitting roo'f' r, the door h inthe said i Water and fa distributingtrough situated around the top of the Walls outside the roof and having a depressed overflow edge to distribute the water-in athin sheet over the said filling, as described.

In Witness whereof' I have hereunder signed my name in the -vpresence of two Witnesses.

SI'LAS B. WAT-ERS.

Witnesses:

E. W. ROBERTS, RUSSELL D. WILSON. 

